Pictures of the day: 13 March 2012

Bolivian coca growers chew coca leaves during the so-called "National day of coca leaf-chewing" in La Paz. Bolivia held a national campaign in defence of chewing the coca leaf, known locally as "acullico," parallel to a request for the legalisation of this practice which Bolivia's President Evo Morales will make at a UN meeting in Vienna.Picture: Juan Karita/AP